Contact Lens Basics

Contact Lens Basics

If you need vision correction for nearsightedness, farsightedness or astigmatism, contact lenses are a popular and effective option. In the United States, approximately 20% of the population who requires vision correction wears contact lenses. Currently dating back more than 125 years, contacts are presently available in a wide variety of materials and types. As opposed to the situation years ago, nowadays almost everyone can wear contact lenses.

Eyeglasses may be an attractive way to accessorize your outfit and make a fashion statement, yet you may sometimes prefer your appearance without glasses. Contact lenses allow you to have sharp vision without eyeglasses or costly vision surgery. Another benefit of contacts is that they grant a wider field of vision than glasses. This is a major advantage when it comes to playing sports or engaging in hobbies and professions such as photography.

If you are considering wearing contact lenses, you’ll need to schedule an initial eye exam and contact lens evaluation with your eye doctor. In the United States, contacts are regarded as medical devices that require a prescription by an eye care professional (ECP). In order to determine the best lenses for you, your ECP will assess your visual condition, structure of your eye and natural tear production.

Contact lenses are categorized depending upon the following factors:

Material composition

How long they can be worn before you have to take them out

Life span- how long they can be used before you have to toss them and grab a new pair

Design of the lenses

Material Composition of Contact Lenses

There are four different types of contact lens materials:

Soft Lenses

Over 90% of contact lenses on the market today are classified as soft lenses. These ultra-comfortable, thin contacts are constructed from gel-like plastics that contain a high percentage of water. They cover the entire cornea of your eye (clear front surface) and it is typically easy to adapt to wearing them.

First introduced in 1971, soft lenses used to be made from hydrogel materials. At present, silicone hydrogel is the most widespread, popular version. They permit a higher quantity of oxygen to reach the eye, which is healthy and comfortable.

Hard, Gas Permeable Lenses

Also called GP or RGP (rigid gas permeable) lenses, these contacts are smaller and made from plastics that have no water. They often provide the advantage of more acute vision, yet it generally takes longer to adapt to wearing them.

Hybrid Lenses

The center zone of these lenses is made from rigid gas permeable lenses, and a soft lens material encircles the border. Hybrid lenses thereby provide the best of both worlds – sharp vision from the center and a soft, comfortable border.

Wearing Time for Contact Lenses

The two primary kinds of contact lenses are daily wear and extended wear. Daily wear lenses must be removed on a nightly basis, and extended wear lenses may be worn up to seven days; a few brands of extended wear lenses are approved by the FDA for monthly wear (also known as “continuous wear” lenses). Extended wear lenses are very convenient even if you always remove them before going to sleep, as they are safe and comfortable for napping. Don’t sleep in your lenses unless you’ve discussed this with your doctor, since improper wear times can lead to corneal damage.

Life Span for Contact Lenses

All contact lenses must be discarded after a specified amount of time, even if you care for them well and properly. Soft contact lenses in particular accumulate lens deposits and contamination, which raises your risk of eye infections.

Daily disposable lenses: the most convenient and healthiest option, these lenses are replaced after one day of wear

Overnight disposable lenses (kept in your eyes overnight): must be replaced after one week

Monthly wear lenses: these are discarded after wearing for 30 days.

Gas permeable contact lenses: these are more resistant to lens deposits and can last up to a year or in many cases even longer with excellent care.

Designs for Contact Lenses

Contact lenses vary depending upon the type of vision correction that is required. The most common design is spherical, which works for nearsightedness, farsightedness and astigmatism. Toric lenses, which come in both soft and GP versions, possess multiple lens powers to correct astigmatism. Bifocal and multifocal lenses utilize a number of zones for different viewing needs, such as near, intermediate and far vision. They are often a good option for presbyopia. Orthokeratology (ortho-k) lenses are designed to reshape the cornea overnight, which corrects daytime vision without a need for eyeglasses or lenses.

Additional Features of Contact Lenses

Colored contacts: Lenses can be worn in color tints that enhance the natural color of your eyes or change your eye color totally. Blue eyes can be made more vibrant, or brown eyes can be altered to green.

Special-effect contacts: These lenses offer an extreme change to the color of your eyes and are generally used for costumes or theatrical effects. You can look like a zombie, an animal, or whatever you envision!

Prosthetic contacts: Disfigurations caused by disease or accidents can be masked by these colored contact lenses. With a medical orientation, prosthetic lenses are generally used to match the appearance of both eyes.

Contact Lenses that are Right for You

To identify the lenses that are ideal for your needs, you must first have a complete eye examination and contact lens evaluation performed by your eye doctor. Your ocular health will be inspected and detailed measurements of your eyes will be taken. Trial lenses will be inserted to check for the best possible and most comfortable fit and vision

After your initial fitting, follow-up visits for contact lenses are important. Your eye doctor will check that the fit is right and that no complications are developing. Your tolerance to contact lenses will be assessed. Sometimes a change in the fit or type of lens is necessary.

Your contact lens prescription will be issued after the fitting process is complete.

Proper Care and Handling of Contact Lenses

It is relatively simple to care for contact lenses. A single, multi-purpose lens solution is generally all that’s required for cleaning, disinfecting and storing your lenses. With daily disposables, routine care is totally eliminated and you can enjoy the feeling of a brand new fresh clean lens every day.

Your eye doctor or contact lens technician will instruct you how to take care of your contact lenses before you leave the office.

Testimonials

You may recognize this gentleman. His name is Tony Weeks and he's a longstanding patient of Dr. Chiodo's at our Northwest Vision Center. In the photo he is flanked by Christy Klimek (the office manager at the Northwest Vision Center) along with Dr. Chiodo. Tony works as a fulltime corrections officer at a high-risk prison in Victorville California but also is (better known as) a popular professional boxing referee. He...

- Tony Weeks

Rayne Thomas has been a patient at the Summerlin Vision Center since 2004. Ms. Thomas is one of our more interesting patients. She’s a world class author, blues vocalist and humorist. Rayne has had so many accomplishments in her life; they are far too numerous to mention. Her goal is to travel the world with the idea of “healing hearts thru laughter”. She conducts workshops and speaking engagements under this premise,...

- Rayne Thomas

8News NOW Weather Anchor and TV Reporter, Diane Tuazon has been a client of Summerlin Vision Center since she moved to Las Vegas back in 2004. Working in front of a camera and being on television every day takes a strain on my eyes, which is why I have to make sure I see the best optometrists in town, and I trust none other than the staff at Summerlin Vision...

- Diane Tuazon

Ted Keegan is our featured patient shown in this picture with Office Manager Melissa Petrie on the left and Dr. Lisa Guerrero on the right. Ted frequents our Seven Hills Vision Center based on the superior level of care provided by Dr. Guerrero and the entire staff. Ted, is a singer, actor and photographer who previously played the phantom in “Phantom of the Opera” in Las Vegas. Ted is joining...

- Ted Keegan

8 News NOW Weather Anchor, Sherry Swensk, has been a client of Summerlin Vision Center for about as long as she’s been on TV in Las Vegas - nearly 20 years! “Forecasting the weather each day, seeing numbers clearly is vital to my job - especially at 4 a.m. Everything can be pretty blurry at that early hour. But thanks to the great staff at Summerlin Vision Center, it’s easy...

- Sherry Swensk

Derrick Williams is an actor/singer for Disney Theatrical. He is currently performing in the Lion King Show at the Mandalay Bay, Las Vegas where he taps into his catlike side as Simba’s father, Mufasa. Derrick Williams is no stranger to the stage. He is originally from New York and is an amazing Broadway actor. He has graced stages on Broadway in “Aida” and “Swing”; has appeared on television programs such...

- Derrick Williams

Seven Hills’ Vision Center is the best!!! I’ve been a client for years for all of my vision needs. They offer incredible service, convenient appointments, the very best most up-todate high tech equipment to ensure a complete eye exam, and offers a classy selection of frames to meet the needs of the most stylish trendiest dressers. Anyone who asks me for an eye dr in town, I never hesitate to say, Dr. Lee at Seven...

- Rudy Ruettiger, from the Movie RUDY

My husband and I had been to other eye doctors in the past and neither one of us had ever left with that satisfied feeling. We knew we’d never go back to “that place” again. So, when we were referred to Dr. Podloski at the vision center needless to say, we didn’t have high hopes for anything different. Our first was at the Northwest location and from the minute we...

- Trish Ketchell

My experience at the Vision Center with Dr. Podloski was educational and streamlined. I had never had glasses before and I was nervous about going to the eye doctor to begin with. I went back to school last year and I was required to do a lot more reading than I was used to Dr. Podloski listened very carefully to my concerns and explained everything in detail that was happening...

- Amanda Ketzenberger

Dear Dr. Guerrero I want to take this time to let you know how nice and exceptional your staff is. From Stephanie, Melissa, and will who welcome you so pleasantly on the phone and entering your office and are so helpful. It’s already a nice experience. Melissa was also lovely and patient when I had to go back for adjustments. You ware very pleasant and informative as well. I felt...

- Ann Kenyon

Dr Podloski I would like to take moment to extend my thanks for your help and going the extra mile to take great care and your extreme concern to help my son see again. You are an incredible doctor and very caring. I wish we had more doctors like you in this world. We’ve sent a little appreciation gift from my son and myself to show how much we are...